GB/T 29168.1-2021石油天然气工业管道输送系统用感应加热弯管、管件和法兰第1部分:感应加热弯管标准
英文:Petroleum and natural gas industries—Induction bends, fittings and flanges for pipeline transportation systems—Part 1...
英文:Petroleum and natural gas industries—Induction bends, fittings and flanges for pipeline transportation systems—Part 1...